Bat/src/main/java/cc/fascinated/bat/service/EventService.java

package cc.fascinated.bat.service;

import cc.fascinated.bat.event.EventListener;
import cc.fascinated.bat.model.BatGuild;
import cc.fascinated.bat.model.BatUser;
import cc.fascinated.bat.model.DiscordMessage;
import lombok.NonNull;
import lombok.extern.log4j.Log4j2;
import net.dv8tion.jda.api.events.guild.member.GuildMemberJoinEvent;
import net.dv8tion.jda.api.events.guild.member.GuildMemberRemoveEvent;
import net.dv8tion.jda.api.events.guild.member.update.GuildMemberUpdateNicknameEvent;
import net.dv8tion.jda.api.events.interaction.ModalInteractionEvent;
import net.dv8tion.jda.api.events.interaction.component.ButtonInteractionEvent;
import net.dv8tion.jda.api.events.interaction.component.StringSelectInteractionEvent;
import net.dv8tion.jda.api.events.message.MessageDeleteEvent;
import net.dv8tion.jda.api.events.message.MessageReceivedEvent;
import net.dv8tion.jda.api.events.user.update.UserUpdateGlobalNameEvent;
import net.dv8tion.jda.api.hooks.ListenerAdapter;
import org.jetbrains.annotations.NotNull;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.DependsOn;
import org.springframework.stereotype.Service;

import java.util.HashSet;
import java.util.Set;

/**
 * @author Fascinated (fascinated7)
 */
@Service
@Log4j2(topic = "Event Service")
@DependsOn("discordService")
public class EventService extends ListenerAdapter {
    /**
     * The list of listeners registered
     */
    public static final Set<EventListener> LISTENERS = new HashSet<>();
    private final GuildService guildService;
    private final UserService userService;
    private final DiscordMessageService discordMessageService;

    @Autowired
    public EventService(@NonNull ApplicationContext context, @NonNull GuildService guildService, @NonNull UserService userService,
                        @NonNull DiscordMessageService discordMessageService) {
        this.guildService = guildService;
        this.userService = userService;
        this.discordMessageService = discordMessageService;
        DiscordService.JDA.addEventListener(this);

        context.getBeansOfType(EventListener.class).values().forEach(this::registerListeners);
        log.info("Registered {} event listeners.", LISTENERS.size());
    }

    /**
     * Registers an event listener
     *
     * @param listener the listener to register
     */
    public void registerListeners(EventListener... listener) {
        LISTENERS.addAll(Set.of(listener));
    }

    @Override
    public void onGuildMemberJoin(@NotNull GuildMemberJoinEvent event) {
        if (event.getUser().isBot()) {
            return;
        }
        BatGuild guild = guildService.getGuild(event.getGuild().getId());
        BatUser user = userService.getUser(event.getUser().getId());

        for (EventListener listener : LISTENERS) {
            listener.onGuildMemberJoin(guild, user, event);
        }
    }

    @Override
    public void onGuildMemberRemove(@NonNull GuildMemberRemoveEvent event) {
        if (event.getUser().isBot()) {
            return;
        }
        BatGuild guild = guildService.getGuild(event.getGuild().getId());
        BatUser user = userService.getUser(event.getUser().getId());

        for (EventListener listener : LISTENERS) {
            listener.onGuildMemberLeave(guild, user, event);
        }
    }

    @Override
    public void onMessageReceived(MessageReceivedEvent event) {
        if (event.getAuthor().isBot()) {
            return;
        }
        BatGuild guild = guildService.getGuild(event.getGuild().getId());
        BatUser user = userService.getUser(event.getAuthor().getId());

        for (EventListener listener : LISTENERS) {
            listener.onGuildMessageReceive(guild, user, event);
        }
    }

    @Override
    public void onMessageDelete(@NotNull MessageDeleteEvent event) {
        BatGuild guild = guildService.getGuild(event.getGuild().getId());
        DiscordMessage message = discordMessageService.getMessage(event.getMessageId());
        BatUser user = message == null ? null : userService.getUser(message.getAuthorId());

        for (EventListener listener : LISTENERS) {
            listener.onGuildMessageDelete(guild, user, message, event);
        }
    }

    @Override
    public void onStringSelectInteraction(StringSelectInteractionEvent event) {
        if (event.getUser().isBot()) {
            return;
        }
        BatGuild guild = event.getGuild() != null ? guildService.getGuild(event.getGuild().getId()) : null;
        BatUser user = userService.getUser(event.getUser().getId());

        for (EventListener listener : LISTENERS) {
            listener.onStringSelectInteraction(guild, user, event);
        }
    }

    @Override
    public void onButtonInteraction(ButtonInteractionEvent event) {
        if (event.getUser().isBot()) {
            return;
        }
        BatGuild guild = event.getGuild() != null ? guildService.getGuild(event.getGuild().getId()) : null;
        BatUser user = userService.getUser(event.getUser().getId());

        for (EventListener listener : LISTENERS) {
            listener.onButtonInteraction(guild, user, event);
        }
    }

    @Override
    public void onModalInteraction(ModalInteractionEvent event) {
        if (event.getUser().isBot()) {
            return;
        }
        BatGuild guild = event.getGuild() != null ? guildService.getGuild(event.getGuild().getId()) : null;
        BatUser user = userService.getUser(event.getUser().getId());

        for (EventListener listener : LISTENERS) {
            listener.onModalInteraction(guild, user, event);
        }
    }

    @Override
    public void onUserUpdateGlobalName(@NotNull UserUpdateGlobalNameEvent event) {
        if (event.getUser().isBot()) {
            return;
        }
        BatUser user = userService.getUser(event.getUser().getId());

        for (EventListener listener : LISTENERS) {
            listener.onUserUpdateGlobalName(user, event.getOldGlobalName(), event.getNewGlobalName(), event);
        }
    }

    @Override
    public void onGuildMemberUpdateNickname(@NotNull GuildMemberUpdateNicknameEvent event) {
        if (event.getUser().isBot()) {
            return;
        }
        BatGuild guild = guildService.getGuild(event.getGuild().getId());
        BatUser user = userService.getUser(event.getUser().getId());

        for (EventListener listener : LISTENERS) {
            listener.onGuildMemberUpdateNickname(guild, user, event.getOldNickname(), event.getNewNickname(), event);
        }
    }
}